Temporary support steel arch device

Abstract

The utility model discloses a kind of temporary support steel arch frame devices, including arc base, steel arch frame and multiple telescopic support rod assemblies, the arc base is located at the bottom of tunnel, the arc surface of the arc base is equipped with multiple connection parts around center interval arrangement, the steel arch frame is supported on the inner wall of tunnel, the inner surface of the steel arch frame is equipped with multiple positioning parts around center interval arrangement, one end of each telescopic support rod assembly is detachably connected with each connection part one by one, the other end of each telescopic support rod assembly is all on steel arch frame, and is engaged with each positioning part one by one. This temporary support steel arch frame device is simple in structure, easy to disassemble and assemble and high in construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tunnel engineering technology, specifically to a temporary support steel arch frame device. Background Technology

[0002] Currently, many steel arch frames used in the excavation and construction of passages or tunnels are integral structures. They are erected manually, which is difficult and carries significant construction risks.

[0003] Chinese patent application No. 202410472098.4 discloses a temporary steel arch frame for the initial support of a large-section loess tunnel. This frame includes a left arch foot steel section, an arch crown steel section, a right arch foot steel section, precast pads, side connecting steel plates for the arch foot, connecting steel plates for the invert arch, fixing bolts, a first anchor bolt, a second anchor bolt, left and right invert arch steel sections, lower temporary steel supports, lower connecting steel plates, upper connecting steel plates, side connecting steel plates, temporary connecting steel plates, connecting bolts, connecting bolts, a support base plate, movable clamping plates, rotating shafts, clamping holes, plastic bags, through rods, and wire mesh. This temporary steel arch frame for the initial support of a large-section loess tunnel is essentially a structure assembled and then erected as a whole, which suffers from problems such as complex structure, inconvenient assembly and disassembly, and low construction efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a temporary support steel arch frame device with simple structure, convenient assembly and disassembly and high construction efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A temporary support steel arch frame device includes an arc-shaped base, a steel arch frame, and multiple telescopic support rod assemblies. The arc-shaped base is located at the bottom of a tunnel, and the arc-shaped upper surface of the base has multiple connecting parts arranged at intervals around the center. The steel arch frame is supported on the inner wall of the tunnel, and the inner surface of the steel arch frame has multiple positioning parts arranged at intervals around the center. One end of each telescopic support rod assembly is detachably connected to each connecting part, and the other end of each telescopic support rod assembly abuts against the steel arch frame and engages with each positioning part.

[0006] As a further improvement to the above technical solution: The telescopic support rod assembly is threadedly connected to the connecting part.

[0007] The connecting part is a threaded hole recessed towards the center of the arc-shaped base, and one end of the telescopic support rod assembly is provided with a threaded post, which is threadedly connected to the corresponding threaded hole.

[0008] The other end of the telescopic support rod assembly is provided with a top support, and the top support is provided with a latch, and the positioning part is locked in the corresponding latch.

[0009] The telescopic support rod assembly includes a first support rod and a second support rod, with one end of the first support rod and the second support rod being movably sleeved together and provided with a locking member for locking both of them, and the threaded post and the top support being respectively provided at the other end of the first support rod and the second support rod.

[0010] The first support rod is provided with a plurality of first locking holes arranged at intervals along the axis, and the second support rod is provided with a plurality of second locking holes arranged at intervals along the axis. The locking member passes through the corresponding first locking hole and second locking hole.

[0011] The locking component is a locking bolt.

[0012] The temporary support steel arch frame device also includes an arc-shaped positioning frame, which has multiple positioning slots arranged at intervals around the center. Each of the telescopic support rod assemblies is correspondingly engaged in each positioning slot, and the two ends of the arc-shaped positioning frame are respectively supported at the bottom of the tunnel.

[0013] The opening direction of the positioning groove is parallel to the axis of the tunnel. An arc-shaped cover plate is fixed on the arc-shaped positioning frame by fixing bolts, and the arc-shaped cover plate covers the opening side of each positioning groove.

[0014] The two ends of the arc-shaped positioning frame are anchored to the bottom of the tunnel by anchor bolts.

[0015] Compared with the prior art, the advantages of this utility model are: The installation process of this utility model's temporary support steel arch frame device is as follows: First, the arc-shaped base is placed at the center of the tunnel bottom, and the steel arch frame is supported on the inner wall of the tunnel. Then, one end of each telescopic support rod assembly is detachably connected to each corresponding connecting part. Each telescopic support rod assembly is extended so that its other end abuts against the steel arch frame and engages with each corresponding positioning part. The disassembly process involves sequentially retracting each telescopic support rod assembly, then removing it from the connecting parts; finally, the steel arch frame is removed from the inner wall of the tunnel. This temporary support steel arch frame device has a simple structure, is easy to assemble and disassemble, and has high construction efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the temporary support steel arch frame device of this utility model.

[0017] Figure 2 This is a schematic diagram of the telescopic support rod assembly of Embodiment 1 of the temporary support steel arch frame device of this utility model.

[0018] Figure 3 This is a schematic diagram of the arc-shaped base of Embodiment 1 of the temporary support steel arch frame device of this utility model.

[0019] Figure 4This is a schematic diagram of the structure of Embodiment 2 of the temporary support steel arch frame device of this utility model.

[0020] Figure 5 This is a schematic diagram of the arc-shaped positioning frame of Embodiment 2 of the temporary support steel arch frame device of this utility model.

[0021] Figure 6 This is a schematic diagram of the arc-shaped cover plate in Embodiment 2 of the temporary support steel arch frame device of this utility model.

[0022] The labels in the diagram represent: 1. Arc-shaped base; 2. Steel arch frame; 3. Telescopic support rod assembly; 31. First support rod; 311. First locking hole; 32. Second support rod; 321. Second locking hole; 33. Locking element; 4. Tunnel; 5. Connecting part; 6. Positioning part; 7. Threaded column; 8. Top support; 81. Bayonet; 9. Arc-shaped positioning frame; 91. Positioning groove; 92. Arc-shaped cover plate; 93. Fixing bolt; 94. Anchor nail. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Example 1: Figures 1 to 3 This invention illustrates an embodiment of a temporary support steel arch frame device. The temporary support steel arch frame device of this embodiment includes an arc-shaped base 1, a steel arch frame 2 (the steel arch frame 2 is arc-shaped), and multiple telescopic support rod assemblies 3. The arc-shaped base 1 is located at the bottom of a tunnel 4. Multiple connecting portions 5 are arranged around the center on the arc-shaped upper surface of the arc-shaped base 1. The steel arch frame 2 is supported on the inner wall of the tunnel 4. Multiple positioning portions 6 are arranged around the center on the inner surface of the steel arch frame 2. One end of each telescopic support rod assembly 3 is detachably connected to each connecting portion 5, and the other end of each telescopic support rod assembly 3 abuts against the steel arch frame 2 and engages with each positioning portion 6.

[0028] The installation process of this temporary support steel arch frame device is as follows: First, the arc-shaped base 1 is placed at the bottom center of tunnel 4, and the steel arch frame 2 is supported on the inner wall of tunnel 4; then, one end of each telescopic support rod assembly 3 is detachably connected to each connecting part 5, and each telescopic support rod assembly 3 is extended so that its other end abuts against the steel arch frame 2 and engages with each positioning part 6. The disassembly process is as follows: each telescopic support rod assembly 3 is retracted sequentially, and then the connecting parts 5 are removed; finally, the steel arch frame 2 is removed from the inner wall of tunnel 4. This temporary support steel arch frame device has a simple structure, is easy to assemble and disassemble, and has high construction efficiency.

[0029] Furthermore, in this embodiment, the telescopic support rod assembly 3 is threadedly connected to the connecting part 5, making it easy to assemble and disassemble.

[0030] Furthermore, in this embodiment, the connecting part 5 is a threaded hole recessed towards the center of the arc-shaped base 1, and one end of the telescopic support rod assembly 3 is provided with a threaded post 7, which is threadedly connected to the corresponding threaded hole.

[0031] Furthermore, in this embodiment, the other end of the telescopic support rod assembly 3 is provided with a top support 8, and the top support 8 is provided with a latch 81, and the positioning part 6 is engaged in the corresponding latch 81. Preferably, the top support 8 is U-shaped, the latch 81 is a U-shaped groove, and the extension direction of the latch 81 is parallel to the axial direction of the tunnel 4.

[0032] Furthermore, such as Figure 1 and Figure 2As shown, in this embodiment, the telescopic support rod assembly 3 includes a first support rod 31 and a second support rod 32. One end of the first support rod 31 and the second support rod 32 are movably sleeved together and provided with a locking member 33 for locking both. A threaded post 7 and a top support 8 are respectively provided at the other end of the first support rod 31 and the second support rod 32. After the locking member 33 is unlocked, the first support rod 31 and the second support rod 32 can slide relative to each other to adjust their total length. After the total length is adjusted, it can be locked by the locking member 33. Specifically, the threaded post 7 is provided at the other end of the first support rod 31, and the top support 8 is provided at the other end of the second support rod 32.

[0033] Furthermore, in this embodiment, the first support rod 31 is provided with a plurality of first locking holes 311 spaced apart along the axis, and the second support rod 32 is provided with a plurality of second locking holes 321 spaced apart along the axis. The locking member 33 passes through the corresponding first locking hole 311 and second locking hole 321. Of course, in other embodiments, the first support rod 31 and the second support rod 32 can also be threaded together.

[0034] Furthermore, in this embodiment, the locking element 33 is a locking bolt.

[0035] Example 2: Figures 4 to 6 This paper illustrates another embodiment of the temporary support steel arch frame device of this utility model. The structure of the temporary support steel arch frame device in this embodiment is basically the same as that in Embodiment 1, except that the temporary support steel arch frame device further includes an arc-shaped positioning frame 9. The arc-shaped positioning frame 9 is provided with multiple positioning slots 91 arranged at intervals around the center. Each telescopic support rod assembly 3 is correspondingly engaged in each positioning slot 91. The two ends of the arc-shaped positioning frame 9 are respectively supported at the bottom of the tunnel 4. The telescopic support rod assemblies 3 are connected together by the arc-shaped positioning frame 9, which can improve the stability of the overall structure.

[0036] Furthermore, in this embodiment, the opening direction of the positioning groove 91 is parallel to the axial direction of the tunnel 4. An arc-shaped cover plate 92 is fixed to the arc-shaped positioning frame 9 by fixing bolts 93, and the arc-shaped cover plate 92 covers the opening side of each positioning groove 91. The opening side of the positioning groove 91 is covered by the arc-shaped cover plate 92 to prevent the telescopic support rod assembly 3 from falling out.

[0037] Furthermore, in this embodiment, the two ends of the arc-shaped positioning frame 9 are anchored to the bottom of the tunnel 4 by anchor nails 94, which further improves the stability of the overall structure.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A temporary support steel arch frame device, characterized in that: The system includes an arc-shaped base (1), a steel arch frame (2), and multiple telescopic support rod assemblies (3). The arc-shaped base (1) is located at the bottom of the tunnel (4). The arc-shaped upper surface of the arc-shaped base (1) is provided with multiple connecting parts (5) arranged around the center at intervals. The steel arch frame (2) is supported on the inner wall of the tunnel (4). The inner surface of the steel arch frame (2) is provided with multiple positioning parts (6) arranged around the center at intervals. One end of each telescopic support rod assembly (3) is detachably connected to each connecting part (5) in a one-to-one correspondence. The other end of each telescopic support rod assembly (3) abuts against the steel arch frame (2) and is engaged with each positioning part (6) in a one-to-one correspondence.

2. The temporary support steel arch frame device according to claim 1, characterized in that: The telescopic support rod assembly (3) is threadedly connected to the connecting part (5).

3. The temporary support steel arch frame device according to claim 1, characterized in that: The connecting part (5) is a threaded hole recessed towards the center of the arc-shaped base (1), and one end of the telescopic support rod assembly (3) is provided with a threaded post (7), which is threadedly connected to the corresponding threaded hole.

4. The temporary support steel arch frame device according to claim 3, characterized in that: The other end of the telescopic support rod assembly (3) is provided with a top support (8), and the top support (8) is provided with a slot (81), and the positioning part (6) is engaged in the corresponding slot (81).

5. The temporary support steel arch frame device according to claim 4, characterized in that: The telescopic support rod assembly (3) includes a first support rod (31) and a second support rod (32). One end of the first support rod (31) and the second support rod (32) are movably connected and provided with a locking member (33) for locking both. The threaded column (7) and the top support (8) are respectively provided at the other end of the first support rod (31) and the second support rod (32).

6. The temporary support steel arch frame device according to claim 5, characterized in that: The first support rod (31) is provided with a plurality of first locking holes (311) arranged at intervals along the axis, and the second support rod (32) is provided with a plurality of second locking holes (321) arranged at intervals along the axis. The locking member (33) passes through the corresponding first locking hole (311) and second locking hole (321).

7. The temporary support steel arch frame device according to claim 6, characterized in that: The locking element (33) is a locking bolt.

8. The temporary support steel arch frame device according to any one of claims 1 to 7, characterized in that: The temporary support steel arch frame device also includes an arc-shaped positioning frame (9), which has multiple positioning slots (91) arranged around the center at intervals. Each telescopic support rod assembly (3) is correspondingly locked in each positioning slot (91), and the two ends of the arc-shaped positioning frame (9) are respectively supported at the bottom of the tunnel (4).

9. The temporary support steel arch frame device according to claim 8, characterized in that: The opening direction of the positioning groove (91) is parallel to the axis of the tunnel (4). An arc-shaped cover plate (92) is fixed on the arc-shaped positioning frame (9) by fixing bolts (93). The arc-shaped cover plate (92) covers the opening side of each positioning groove (91).

10. The temporary support steel arch frame device according to claim 9, characterized in that: The two ends of the arc-shaped positioning frame (9) are respectively anchored to the bottom of the tunnel (4) by anchor nails (94).

Images